Abstract: A method for determining a trusted terminal and a related apparatus, which are applied to a zero trust network security architecture, improves security of the zero trust architecture. The method includes: a terminal sends an access request when the terminal accesses an application server. A policy control apparatus sends an HTTPS connection request to the terminal based on the access request from the terminal. The terminal sends verification information to the policy control apparatus based on the HTTPS connection request. The policy control apparatus performs verification on the verification information. After the verification on the verification information succeeds, the terminal successfully establishes an HTTPS connection to the policy control apparatus. The HTTPS connection indicates that the terminal is a trusted terminal.

Abstract: A policy control apparatus performs identity authentication on a terminal. After the identity authentication on the terminal succeeds, the policy control apparatus generates a trust identifier and sends the trust identifier to the terminal. The terminal saves the trust identifier. When the terminal needs to access an application server, an environment awareness client installed in the terminal obtains the trust identifier from a location at which the trust identifier is saved in the terminal. The terminal sends an access request that carries a trust identifier to the policy control apparatus. The policy control apparatus determines, based on the trust identifier, that the terminal is a trusted terminal.

Abstract: A two-channel burner includes a pulverized coal supply mechanism, a transition channel, an inner secondary air guide tube, an outer secondary air guide tube, a combustion stabilizing chamber, and a flow smoothing chamber. The outer secondary air guide tube, the combustion stabilizing chamber, and the flow smoothing chamber are sequentially connected to form a burner body. The pulverized coal supply mechanism passes through an interior of the burner body. The transition channel is fitted over the pulverized coal supply mechanism. The inner secondary air guide tube is disposed between the transition channel and the outer secondary air guide tube and forms an inner secondary air passage together with the transition channel, and forms an outer secondary air passage together with the outer secondary air guide tube. An outlet end of the inner secondary air guide tube is formed to have a flared opening.